Linked Life Data

11232808

Source:http://linkedlifedata.com/resource/pubmed/id/11232808

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
13
pubmed:dateCreated
2001-3-5
pubmed:abstractText
The unique optical properties of Se2- radicals located in the cages of the sodalite structure are reported. By means of luminescence, photoluminescence excitation, and absorption spectroscopy, three different centers are identified. Two of them are Se2- anions in sites with presumably a tetrahedral Na4(4+) coordination and a Na3(3+) environment with cation deficiency, respectively, giving rise to a red luminescence band with two different progressions. The third center is the intermediate Se2 molecule, created photochemically by UV laser excitation. It induces an additional blue luminescence. The electronic properties of the Se2- centers, particularly in the excited states, are significantly influenced by steric constraints imposed by the limited space in the sodalite host polyhedra. Thus, the sodalite structure can be viewed as a model system for studying effects of this kind on chromophores imbedded in the cages of the zeolite-type lattice.
pubmed:language
eng
pubmed:journal
pubmed:status
PubMed-not-MEDLINE
pubmed:month
Jun
pubmed:issn
0020-1669
pubmed:author
pubmed:issnType
Print
pubmed:day
26
pubmed:volume
39
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
2740-6
pubmed:dateRevised
2003-10-31
pubmed:year
2000
pubmed:articleTitle
Optical properties of Se2- and Se2 color centers in the red selenium ultramarine with the sodalite structure.
pubmed:affiliation
Fachbereich Physik, Zentrum für Materialforschung der Philipps-Universität Marburg, Germany.
pubmed:publicationType
Journal Article